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Disable lazy loading for custom objects
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GeertvanHorrik View Drop Down
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Joined: 23-Jun-2011
Posts: 6 		Post Options Post Options   Quote GeertvanHorrik Quote  Post ReplyReply Direct Link To This Post Topic: Disable lazy loading for custom objects
    Posted: 23-Jun-2011 at 7:48am
Hello,

I have a custom query where I want to load a simple structure:

Products and Orders. I have created POCO's for the objects since the EF model is too heavy for displaying some dashboard information.

Now I have 2 questions:

1) How can I disable lazy loading of the 2nd layer? An order contains a list of products, but the products are not loaded (even though it is a custom POCO class). How can I force DevForce to execute the whole linq query for this query only?

2) It seems impossible to subtract time in LINQ. Is there a workaround for this?

Thanks in advance!
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sbelini View Drop Down
IdeaBlade
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Joined: 13-Aug-2010
Location: Oakland
Posts: 786 		Post Options Post Options   Quote sbelini Quote  Post ReplyReply Direct Link To This Post Posted: 23-Jun-2011 at 4:59pm
Hi GeertvanHorrik,
 
1) You can disable lazy loading by changing the LoadStrategy:
 
Order.PropertyMetadata.Products.ReferenceStrategy =
          new EntityReferenceStrategy(EntityReferenceLoadStrategy.Load, MergeStrategy.PreserveChanges);
 
You will find more details about the ReferenceStrategy in the DevForce Resource Center.
 
 
2) "It seems impossible to subtract time in LINQ. Is there a workaround for this?"
 
     I'm not sure I understand your question. Can you explain in detail what you are trying to do and what problem you are coming across?
 
Regards,
   Silvio.
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GeertvanHorrik View Drop Down
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Joined: 23-Jun-2011
Posts: 6 		Post Options Post Options   Quote GeertvanHorrik Quote  Post ReplyReply Direct Link To This Post Posted: 25-Jul-2011 at 12:48am
Hello Silvio,

Sorry for my late reply. 

1) thanks

2) I tried to subtract a date in a query, but this seems to be an EF restriction
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